Between the Alaska Range Mountains in the south and the Brooks Range Mountains in the north, scores of wildfires were burning in east-central Alaska on June 30, 2005. Nearly all of the blazes were triggered by lightning. In this Moderate Resolution Imaging Spectroradiometer <a HREF="http://modis.gsfc.nasa.gov" target="outlink">(MODIS)</a> image from NASA’s <a HREF="http://aqua.nasa.gov" target="outlink">Aqua</a> satellite, the Yukon River Flats are barely visible beneath the cover of smoke that dominates the top and right of the image. To the south, Fairbanks is visible as a tan-colored spot on the north bank of the Delta River. Locations where MODIS detected actively burning fires are outlined in red. Sensor: Aqua/MODIS.